package org.jeecgframework.core.util.code;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;

import javax.imageio.ImageIO;

import com.swetake.util.Qrcode;

public class QRCodeUtil {

	public static  void encoderQRCoder(String content) {
		try {
			Qrcode handler = new Qrcode();
			handler.setQrcodeErrorCorrect('M');
			handler.setQrcodeEncodeMode('B');
			handler.setQrcodeVersion(7);

			System.out.println(content);
			byte[] contentBytes = content.getBytes("UTF-8");

			BufferedImage bufImg = new BufferedImage(140, 140,
					BufferedImage.TYPE_INT_RGB);

			Graphics2D gs = bufImg.createGraphics();

			gs.setBackground(Color.WHITE);
			gs.clearRect(0, 0, 140, 140);

			// 设定图像颜色：BLACK
			gs.setColor(Color.BLACK);

			// 设置偏移量 不设置肯能导致解析出错
			int pixoff = 2;
			// 输出内容：二维码
			if (contentBytes.length > 0 && contentBytes.length < 124) {
				boolean[][] codeOut = handler.calQrcode(contentBytes);
				for (int i = 0; i < codeOut.length; i++) {
					for (int j = 0; j < codeOut.length; j++) {
						if (codeOut[j][i]) {
							gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
						}
					}
				}
			} else {
				System.err.println("QRCode content bytes length = "
						+ contentBytes.length + " not in [ 0,120 ]. ");
			}

			gs.dispose();
			bufImg.flush();

			File file = new File("D:\\1.jpg");
			// 生成二维码QRCode图片
			// ImageIO.write(bufImg, "jpg", response.getOutputStream());
			ImageIO.write(bufImg, "jpg", new FileOutputStream(file));
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		String url = "http://100.100.1.101:8888/sm/";
		QRCodeUtil.encoderQRCoder(url);
	}
}